Thanks for the response. I don't care about backups as I'm still in the process of setting up this new device but how do I run a persist backup? The device I purchased was supposedly an unlocked T-Mobile device. When I place a different provider's SIM card in the phone, it recognizes it as an AT&T SIM without service so I'm pretty sure its already unlocked because it would have prompted me for an unlock code if it was LOCKED, correct? Is there an ADB or fastboot command that will confirm if its truly unlocked? If it IS already unlocked just use the MSM tool and proceed with the instructions? Thanks!Yes. Use the official method of receiving the unlock code for your SIM and then using MSM tool --> unlock bootloader. Here are the steps.
Preparation: Notes are important, please pay attention ONLY use stock USB-A to USB-C cable I have tried the stock cable from Axon 7, fail fail and more fail, don't make this mistake DON'T store flash files on USB storage. fastboot will...forum.xda-developers.com
Also take a persist backup if possible.